Yes it would, and it has been used as such. As KPS said, try to find one locally. Make sure it fits your hand, and get a heavier (steel?) model rather than lightweight aluminum.

One warning: the "carabiner as brass knuckle" idea isn't exactly a secret, so a cop could possibly still say it's a "dangerous weapon" if you are caught using it. Kinda like walking around with a roll of quarters, which got me questioned at an airport once.

Definitely attach it to your keychain. And, you now have nice sharp keys to whack somebody with, too. I keep all sorts of "heavy objects" on my keychain for that purpose, including one of those rubber keychain containers that fit $5 worth in quarters, and a Spyderco Dragonfly. Ouch!

I'll second David's warning, I've had friends thrown out of clubs for having carabiners, small chains, kubotons, and padlocks. At my younger brother's college, carabiners are forbidden on campus (along with all other manner of keychain self-defense). So it's legal in the sense that carrying a baton or quarterstaff is legal....

Anything you use as a weapon will be considered a weapon when/if you are charged. A shovel becomes a weapon in the eyes of the law when you start beating somebody about the head and neck with it, and (as somebody already pointed out) use of carabiners as knucks is hardly top-secret information.

I don't advocate using it as an offensive weapon only for self defense in case my pepper spray doesn't work. Brass knuckles will mean jail time where I live so I have to find an alternative. I will hook a key to it.

When I was in the military a few years ago (about 9 )Carabiners were being used as improvised brass knucks by a few of my friends without much notice. But, as climbing equipment,and the cheap knock off key chain caribiners came more readily available to the general public, alot of people caught on to the trick, including some State Legislatures for amending them to the Penal Code as Brass Knuckles.

In other words as is said elsewhere on the board, if you carry a Carbiner and think the cops or people won't catch on to what it's other use is besides climbing, think again your wrong.

madgrad, thanks for the input. I will tell them that it is used as a key ring. Cops won't buy it but a good lawyer might save my a_ss. Where I live almost everything is outlawed under the law. I always advocate trying to stay clear from trouble but sometimes trouble corners you and you have to defend yourself. I have pepper spray but it is not 100%.

I just brought my briefcase with carabiner attached to the handle through Logan airport in Boston - lots of LEOs of every description and National Guardsmen everywhere. My laptop was examined in garve detail, but the carabiner was not noticed in the least. Add it to you list.
BRET

Carabiners are useful for many things besides climbing and knuckle-dusting.
For years I kept one on my dog's leash, made a quick way to secure it to almost anything. With nylon webbing (more climbing gear) it's the quickest way to secure something to a boat or canoe, or to secure a canoe to a tree. No knots to untie.
All my backpacks and daybacks have a 'biner or two attached.

The GI surplus ones are the heaviest, and cheapest, because for most purposes lighter is better. But I always used Chouinard, Black Diamond, REI, etc.
If you leave a locking model under salt water too long, you might need pliers to open it. Even the "mariner" models.

When I needed to step off the trail for a minute with free hands to take care of urgent business, I just dropped my pack and clipped the dog to it.

When a friend got his truck stuck at the bottom of a surprisingly short boat ramp, two biners and 15' of webbing made a quick tow strap to haul it out. That really tightened the knots, but the 'biners made it easy to disconnect the tow vehicle.

The more you carry and use carabiners everyday, the less they will feel like weapons instead of common tools.

Also, visit your local hardware store, Home Depot, or Lowe's and check the fasteners section... next to the chains and paracord there should be tons of "industrial" carabiners. Nice and heavy all steel and very cheap (about $2 and no shipping!).

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